Hi @Oliver Lennox ,
Per my knowledge, we are not able to control when and how versions are created, they are created by default every time we edit and save a document. When you enable minor version setting, users don't need to check out or check in. Only if you enable "Require Check Out" in version settings, documents will need to be checked out before they can be edited.
If you are using Sync setting in SharePoint online, it will be a two-way synchronization of files and folders between SharePoint document and your computer. So you will get all your version setting from your SharePoint online.
For Reference: Versioning in SharePoint
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.